Environment-friendly waterproof and oil-proof coating method for pulp molding
By constructing a biomass-based coating agent of nano-brown cellulose and starch on the surface of pulp molding, the problems of surface roughness and additive migration in pulp molding products are solved, the waterproof and oil-proof performance is improved and the stability of additives is enhanced, thereby improving the appearance and service life of the products.
CN119083235BActive Publication Date: 2026-06-02DONGGUAN DANGNA PRINTING CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN DANGNA PRINTING CO LTD
- Filing Date
- 2024-08-30
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing pulp molding products have a rough surface, lack waterproof and oil-proof properties, and the additives are prone to migration, which can affect health.
Method used
A biomass-based coating agent was constructed using starch and nano-brown cellulose. By modifying nano-brown cellulose and starch, a coating agent was prepared and coated onto the molded surface of pulp to form a superhydrophobic and oil-resistant structure, thus preventing the migration of additives.
Benefits of technology
It improves the waterproof and oil-proof properties of pulp molding, enhances the appearance, strengthens mechanical properties, effectively prevents the leaching of additives, and extends service life.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119083235B_ABST
Abstract
The application discloses an environment-friendly waterproof and oil-proof film coating method for paper pulp molding, and specifically comprises the following steps: step 1, preparing nano brown cellulose; step 2, modifying the nano brown cellulose prepared in step 1 to obtain modified nano brown cellulose; step 3, modifying starch to obtain modified starch; step 4, preparing an acrylic acid oligomer; step 5, preparing a film coating agent according to the products obtained in steps 2-4; and step 6, coating a film by using the film coating agent prepared in step 5. The biomass-based coating agent constructed by using starch and nano brown cellulose is used for coating a film for paper pulp molding, waterproof and oil-proof film coating are realized, and the dissolution and migration of internal additives of the paper pulp molding are effectively avoided.
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